Instructions / Assembly

Electrical Diagram
2 Phase, 18kW, 21kW, 24kW
Starting the system for the rst time
01 0302
The water heater
is now ready for
operation.
With water running through
the unit, turn the knob to
adjust the temperature.
The recommended
temperature setting is
118°F (48°C).
Turn the temperature
knob clockwise to activate
the heater to display
outlet temperature.
118
º
F
A Temperature setting knob
B Digital temperature display
C Hot water outlet
(to be connected to the main hot water pipe)
D Pressure relief device (PRD)
E Cold water inlet
BA
C D
E
H3
TRIAC 3
T1
T2
T3
HEATER CONTROL
CTRL1
GROUND
BAR
L1
L2
L1
L2
L1
L2
HEATER
DISPLAY
TRIAC 2
TRIAC 1
SNSR1
FLOW SENSOR
SNSR2
TEMP SENSOR
SNSR3
TEMP SENSOR
H2
H1
T1, T2, T3 = Thermostat
H1, H2, H3 = Heating Element
SNSR2 = Inlet Temperature Sensor
SNSR3 = Inlet Temperature Sensor
TERMINAL
BLOCK
109